73164-69-9Relevant academic research and scientific papers
Gold-catalyzed annulations of: N -aryl ynamides with benzisoxazoles to construct 6 H -indolo[2,3- b] quinoline cores
Tsai, Meng-Han,Wang, Cheng-Yu,Kulandai Raj, Antony Sekar,Liu, Rai-Shung
supporting information, p. 10866 - 10869 (2018/10/02)
This work reports new annulations of N-aryl ynamides with benzisoxazoles to form 6H-indolo[2,3-b]quinoline derivatives. The synthetic utility of this new method is manifested by its applicability to access naturally occurring alkaloids including norcryptotackeine, neocryptolepine and 11-methylneocryptol-epine. Our experimental data indicate that higherature conditions allow N-aryl nucleophiles to become conformationally flexible, rendering the attack at gold carbenes effective to generate reactive indoles that attack again the benzaldehyde to furnish the observed products.
Cyclohexanediones and their use as plant growth regulators
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, (2008/06/13)
The invention relates to the novel cyclohexanediones of formula I STR1 in which R is hydrogen or C1 -C6 -alkyl, A is R2, OR3 or NR3 R4, R2 is C1 -C6 -alkyl that is unsubstituted or is mono-substituted by C1 -C4 -alkoxy or mono- or poly-substituted by halogen, or is C3 -C6 -cycloalkyl, R3 is C1 -C6 -alkyl or C3 -C6 -cycloalkyl, or is phenyl or benzyl each of which is unsubstituted or is mono-, di- or tri-substituted by R5, R4 is hydrogen, C1 -C6 -alkyl, C1 -C4 -alkoxy or C3 -C6 -cycloalkyl, R3 and R4 are, in addition, together with the nitrogen atom to which they are bonded, a pyrrolidine, morpholine or piperidine radical, B is one of the radicals STR2 m is 0, 1, 2 or 3, R5 is halogen, nitro, cyano, C1 -C4 -alkyl, C1 -C4 -alkoxy, C1 -C4 -alkylthio, C1 -C4 -haloalkyl, C1 -C4 -alkylsulphinyl or C1 -C4 -alkylsulphonyl, R6 is C1 -C6 -alkyl or C3 -C6 -cycloalkyl, and R7 is hydrogen, C1 -C6 -alkyl, C1 -C6 -haloalkyl, C3 -C6 -alkenyl, C3 -C6 -haloalkenyl or C3 -C6 -alkynyl, and to salts of the compounds of formula I with acids, bases or complex-formers, to processes for the preparation thereof and to novel intermediates. The compounds of formula I have herbicidal and growth-regulating action.
